Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select No improvement.
The river is flooded and it has overflown its banks. (a) it overflowing its banks. (b) it has overflow its banks. (c) No improvement. (d) it overflow its banks.

Options

A. it overflowing its banks.
B. it has overflow its banks.
C. No improvement.
D. it overflow its banks.

Answer

C